Use this key for a few selected Gram negative bacillus

Last updated: 5/26/2023

Use this key for a few selected Gram negative bacillus shaped bacteria to identify the possible bacterium based on the following test results Test Citrate utilization Hydrogen sulfide production Indole production Lactose fermentation Motility Phenylalanine deaminase Result Remember to start at the top of the key and move downward through it DO NOT try to match all test results to each bacterium you have to determine which results are important for this organism based on the key Type in the bacterial genus spelling and capitalization count Canvas ignores italics but formally the genus should also be italicized